What Is Polycarbonate Lens?
Polycarbonate was invented in the 1970s for aerospace applications and is currently used for the helmet visors of astronauts and for space shuttle windshields.
Polycarbonate lenses were introduced in the early 1980s in response to a demand for lightweight, impact-resistance lenses. Since then, polycarbonate glasses have become standard for safety glasses, sports goggles, and children’s eyewear.
Polycarbonate glasses come with a lot of features such as thin and light and they provide 100% percent UV protection and are up to 10 times more impact-resistance than plastic pr glasses lenses.
The Optical Center of A Lens
When wearing glasses, try to look through the optical center of the lens. This needs the cooperation of the neck, you can slightly lower the head when looking at the computer, to adjust the line of sight. The Center of optical glasses is divided into two kinds: 1 mm up myopic lens center is the most proper, of course, more than 2-3. And the most important thing is that the lens pupil high (about the two-lens optical center of the high and low) must be proper (that is, the right of the lens optical center is 1 mm, the left must be 1 mm. 2-3 mm is the same, what is the height of the pupil on the right side must be the same on the left side. The optical center of the presbyopic lens is 1 mm, the most proper.
The shape of the lens is also important.
Aviator and cat-eye glasses should be avoided, as both will cut off the base of the prescription, resulting in poor reading vision. Instead, they should opt for shorter frames with rounded edges, such as bull horn frames, vintage wingtips, round frames, and oval frames.
Eyeglasses chain stores have unified standards.
Due to the different management systems, the traditional business mainly relies on differentiated management and it enables member enterprises to have different business scope and modes and form complimentary benefits. Often, member enterprises are not required to implement unified management, with the unclear division of labor and uncertain responsibilities. The main store of a chain store and other stores shall form a clear division of labor in their professional functions, requiring the implementation of a unified management system, unified purchase, unified operation, and unified management. All the stores under the jurisdiction implement the unified management norm form formulated by the headquarters to form a unified norm.
The round frames VS square frames
In choosing frame respect, be about to choose according to the face shape of oneself. Circular frames show that the facial ministry line is downier fruity, so they can show young affinity feeling. Contrary, square picture frames, can increase facial ministry line feeling, making facial features relatively mature. If you have a square face, go for round glasses, which will flatter your face and make it less sharp. If you have a round face, go for square glasses, which will make your face less round.
Are metal or plastic eyeglass frames better?
Experts agree that many materials of sunglasses will be targeted, with a high focus on the specific combination of materials used. The frame of your glasses depends on whether you want a stylish or mature look. You can wear different glasses for different situations and clothes. Metal sunglasses are suitable for formal situations or mature types of people, and not easy to damage. Plastic sunglasses are usually more diverse, and the design is changeable. They can be used for a variety of sites. They are suitable for each age group and can be selected according to your actual situation.
New Fashion Police Men's Polarized Sunglasses Driving Glasses
They have high quality. The lens material is a polarized lens. The frame color is silver/gold/brown/black and the visibility rate is 99(%). UV protection rating is UV400,with 100% UV protection. They are suitable for driving, fishing, daily leisure.
Most accidents happen at night and before dawn, which has a lot to do with glare and the problem of many people having blurred vision in the dark. Every driver knows the trouble of driving at night: glare, bright reflections, and bright lights from oncoming traffic. In addition, poor visibility at night can make driving tiring and dangerous!
